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Strong earthquake, 6.9 mag strikes near Nikolski in Alaska


Earthquake location 52.062S, -169.391WA earthquake magnitude 6.9 (ml/mb) has occurred on Sunday, 103 km SSW of Nikolski, Alaska (64 miles). Global date and time of event UTC/GMT: 27/07/15 / 2015-07-27 04:49:42 / July 27, 2015 @ 4:49 am. Exact location, longitude -169.391° West, latitude 52.062° North, depth = 10 km. The temblor was picked up at 17:49:42 / 5:49 pm (local time epicenter). A tsunami warning has been issued near Nikolski in Alaska (Does not indicate if a tsunami actually did or will exist). Unique identifier: at00ns4qqu. Ids that are associated to the event: at00ns4qqu. The epicenter was at a depth of 10 km (6 miles).

In the past 24 hours, there have been four, in the last 10 days seven, in the past 30 days eleven and in the last 365 days ninety-two earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 6.0 to 6.9 may cause a lot of damage in very populated areas. Each year there are an estimated 135 quakes in the world.

Did you feel it?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 103 km SSW of Nikolski, Alaska.

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More information

Parameter Value Description
Magnitude 6.9 mb The magnitude for the event.
Longitude -169.391° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.062° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 103km SSW of Nikolski, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-07-27 04:49:42 Time when the event occurred. UTC/GMT
Updated 2015-07-27 04:54:19 Time when the event was most recently updated. UTC/GMT
Timezone offset -660 Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI The maximum reported intensity for the event.
MMI The maximum estimated instrumental intensity for the event.
Alert Level The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status REVIEWED Indicates whether the event has been reviewed by a human.
Tsunami 1 This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG 732 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network at The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,at, A comma-separated list of network contributors.
Number of Stations Used 28 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.96838388 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.35 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 208.8 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type Mi The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID at00ns4qqu Id of event.
Event Code 00ns4qqu An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00ns4qqu, A comma-separated list of event ids that are associated to an event.

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